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Lớp 4 (Toán, TV, TA)
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1.
d x (e + f ) = d x e + d x f . Đúng hay sai?
đúng
sai
2.
c x ( b + d ) = c x b + c x d. Đúng hay sai?
đúng
sai
3.
a x ( b + c ) = a x b + a x c. Đúng hay sai?
đúng
sai
4.
4 x ( 5 + 7 ) = ?
4 x 5 + 4 x 7
4 x 5 + 47
4 x 5 + 4 + 7
5.
5 x ( 3 + 7 ) = 5 x 3 + ?
57
5 + 7
5 x 7
6.
3 x ( 8 + 6 ) = 24 +
14
16
18
7.
75 x ( 2 + 10 ) = ?
800
900
1000
8.
125 x 8 + 125 x 2 =
1150
1250
1350
9.
65 x ( 20 + 3 ) =
1490
1495
1500
Answer
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